Zobrazeno 1 - 10
of 2 232
pro vyhledávání: '"Manfra M"'
Autor:
Banszerus, L., Andersson, C. W., Marshall, W., Lindemann, T., Manfra, M. J., Marcus, C. M., Vaitiekėnas, S.
Controlling the current-phase relation (CPR) of Josephson elements is essential for tailoring the eigenstates of superconducting qubits, tuning the properties of parametric amplifiers, and designing nonreciprocal superconducting devices. Here, we int
Externí odkaz:
http://arxiv.org/abs/2406.20082
Autor:
Banszerus, L., Marshall, W., Andersson, C. W., Lindemann, T., Manfra, M. J., Marcus, C. M., Vaitiekėnas, S.
We report measurements of the current-phase relation of two voltage-controlled semiconductor-superconductor hybrid Josephson junctions (JJs) in series. The two hybrid junctions behave similar to a single-mode JJ with effective transparency determined
Externí odkaz:
http://arxiv.org/abs/2402.11603
We investigate transport properties of stable gate-defined quantum dots formed in an InSb$_{0.87}$As$_{0.13}$ quantum well. High $\textit{g}$-factor and strong spin-orbit-coupling make InSb$_x$As$_{1-x}$ a promising platform for exploration of topolo
Externí odkaz:
http://arxiv.org/abs/2311.05693
Autor:
Kass, A. El, Jin, C. T., Watson, J. D., Gardner, G. C., Fallahi, S., Manfra, M. J., Reilly, D. J.
We demonstrate a radio-frequency parametric amplifier that exploits the gate-tunable quantum capacitance of an ultra high mobility two dimensional electron gas (2DEG) in a GaAs heterostructure at cryogenic temperatures. The prototype narrowband ampli
Externí odkaz:
http://arxiv.org/abs/2304.13227
Autor:
Harlech-Jones, B., Waddy, S. J., Witt, J. D. S., Govender, D., Casparis, L., Martinez, E., Kallaher, R., Gronin, S., Gardner, G., Manfra, M. J., Reilly, D. J.
We report microwave impedance measurements of a superconductor-semiconductor hybrid nanowire device with three terminals (3T). Our technique makes use of transmission line resonators to acquire the nine complex scattering matrix parameters (S-paramet
Externí odkaz:
http://arxiv.org/abs/2207.12516
InSb$_{1-x}$As$_{x}$ is a promising material system for exploration of topological superconductivity in hybrid superconductor/semiconductor devices due to large effective g-factor and enhanced spin-orbit coupling when compared to binary InSb and InAs
Externí odkaz:
http://arxiv.org/abs/2207.02006
Autor:
Banerjee, A., Lesser, O., Rahman, M. A., Thomas, C., Wang, T., Manfra, M. J., Berg, E., Oreg, Y., Stern, Ady, Marcus, C. M.
Publikováno v:
Phys. Rev. Lett. 130, 096202 (2023)
We report simultaneously acquired local and nonlocal transport spectroscopy in a phase-biased planar Josephson junction based on an epitaxial InAs/Al hybrid two-dimensional heterostructure. Quantum point contacts at the junction ends allow measuremen
Externí odkaz:
http://arxiv.org/abs/2205.09419
Autor:
Hertel, A., Eichinger, M., Andersen, L. O., van Zanten, D. M. T., Kallatt, S., Scarlino, P., Kringhøj, A., Chavez-Garcia, J. M., Gardner, G. C., Gronin, S., Manfra, M. J., Gyenis, A., Kjaergaard, M., Marcus, C. M., Petersson, K. D.
Publikováno v:
Phys. Rev. Applied 18, 034042 (2022)
We present a gate-voltage tunable transmon qubit (gatemon) based on planar InAs nanowires that are selectively grown on a high resistivity silicon substrate using III-V buffer layers. We show that low loss superconducting resonators with an internal
Externí odkaz:
http://arxiv.org/abs/2202.10860
Autor:
Chauhan, Prashant, Thomas, Candice, Lindemann, Tyler, Gardner, Geoffrey C., Gukelberger, J., Manfra, M. J., Armitage, N. P.
Publikováno v:
Appl. Phys. Lett. 120, 142105 (2022)
Two-dimensional electron gasses (2DEG) in InAs quantum wells proximitized by aluminum are promising platforms for topological qubits based on Majorana zero modes. However, there are still substantial uncertainties associated with the nature of the el
Externí odkaz:
http://arxiv.org/abs/2202.02204
Autor:
Banerjee, A., Lesser, O., Rahman, M. A., Wang, H. -R., Li, M. -R., Kringhøj, A., Whiticar, A. M., Drachmann, A. C. C., Thomas, C., Wang, T., Manfra, M. J., Berg, E., Oreg, Y., Stern, Ady, Marcus, C. M.
A growing body of work suggests that planar Josephson junctions fabricated using superconducting hybrid materials provide a highly controllable route toward one-dimensional topological superconductivity. Among the experimental controls are in-plane m
Externí odkaz:
http://arxiv.org/abs/2201.03453